| US 7,453,172 B2 | ||
| Linear slide apparatus | ||
| Hisashi Yajima, Tsukuba-gun (Japan); Takayuki Toshida, Tsukuba-gun (Japan); and Nobuhiro Fujiwara, Tsukuba-gun (Japan) | ||
| Assigned to SMC Corporation, Tokyo (Japan) | ||
| Filed on Nov. 17, 2004, as Appl. No. 10/989,332. | ||
| Claims priority of application No. 2003-403727 (JP), filed on Dec. 02, 2003. | ||
| Prior Publication US 2005/0116550 A1, Jun. 02, 2005 | ||
| Int. Cl. H02K 41/00 (2006.01) | ||
| U.S. Cl. 310—12 | 10 Claims |
| 1. A linear slide apparatus comprising a straightly extending table guide, a table capable of moving along the table guide
in an axial direction thereof, and an electromagnetic actuator which drives the table, wherein
the table guide includes a hollow hole formed therein, and a rail portion which is integrally formed with the table guide
outside the hollow hole and extends in the axial direction along the table guide and which movably supports the table,
the electromagnetic actuator includes an exciting coil generating a magnetic force when energized and a second core portion
which are fixedly and co-centrally mounted in the hollow hole of the table guide, a first core portion of which encloses said
exciting coil and said second core portion, a moving body which moves straightly using the magnetic force generated in both
the first and second core portions as thrust when a current is passed through the exciting coil, the moving body including
a permanent magnet and being disposed in the hollow hole of the table guide so as to move in the axial direction of the table
guide, and the moving body and the table being interconnected through a joint member, and
the table guide is made of magnetic material and serves as the first core portion.
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